/**
 * Created by hehe on 2015/7/23.
 */
console.log(new Date(2013, 4, 1))

console.log(parseInt(12))


if(!isNaN('12')){
    console.log("是数字");
}else{
    console.log("不是数字");
}

console.log(new Date('2014 1 12'))

console.log(new Date('"Tuesday, July 21, 2015,22:00'));

var a = undefined;
var b = undefined;
var c = a ||b;
console.log(c);
